Achieving the capacity region boundary of fading CDMA channels via generalized iterative waterfilling
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Dosyalar
Tarih
2006-11
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
IEEE
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
We characterize the optimum power control policies that achieve arbitrary rate tuples on the boundary of the, capacity region of a power controlled, code division multiple access (CDMA) system in a fading channel with perfect channel state information (CSI). We propose a "generalized" waterfilling approach, and provide an iterative algorithm that solves for the optimum power allocation policy, for A given arbitrary rate tuple on the boundary of the capacity region. We then investigate the effects of limited feedback on the capacity region, and demonstrate that a good power control policy may require only a very low rate feedback.
Açıklama
Manuscript received November 19, 2004; revised June 13, 2006; accepted August 10, 2006. The associate editor coordinating the review of this paper and approving it for publication was M. Sawahashi. This work was supported by NSF Grants ANI 02-05330 and CCR 03-11311; and ARL/CTA Grant DAAD 19-01-2-0011, and was presented in part at the Conference on Information Sciences and Systems, Princeton, NJ, March 2004 [1].
Anahtar Kelimeler
Capacity region, CDMA, Generalized iterative waterfilling, Limited feedback, Power control, Information, Fading channels, Boundary conditions, Communication channels (information theory), Information theory, Iterative methods, Code division multiple access
Kaynak
IEEE Transactions on Wireless Communications
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
5
Sayı
11
Künye
Kaya, O. & Ulukuş, Ş. (2006). Achieving the capacity region boundary of fading CDMA channels via generalized iterative waterfilling. IEEE Transactions on Wireless Communications, 5(11), 3215-3223. doi:10.1109/TWC.2006.04785
